/*
 * ProGuard -- shrinking, optimization, obfuscation, and preverification of Java bytecode.
 *
 * Copyright (c) 2002-2018 GuardSquare NV
 *
 * This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public
 * License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later
 * version.
 *
 * This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied
 * warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License along with this program; if not, write to the Free
 * Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
 */
package proguard.evaluation.value;

/**
 * This DoubleValue represents a particular double value.
 *
 * @author Eric Lafortune
 */
final class ParticularDoubleValue extends SpecificDoubleValue {
    private final double value;

    /**
     * Creates a new particular double value.
     */
    public ParticularDoubleValue(double value) {
        this.value = value;
    }

    // Implementations for DoubleValue.

    public double value() {
        return value;
    }

    // Implementations of unary methods of DoubleValue.

    public DoubleValue negate() {
        return new ParticularDoubleValue(-value);
    }

    public IntegerValue convertToInteger() {
        return new ParticularIntegerValue((int)value);
    }

    public LongValue convertToLong() {
        return new ParticularLongValue((long)value);
    }

    public FloatValue convertToFloat() {
        return new ParticularFloatValue((float)value);
    }

    // Implementations of binary methods of DoubleValue.

    public DoubleValue generalize(DoubleValue other) {
        return other.generalize(this);
    }

    public DoubleValue add(DoubleValue other) {
        // Careful: -0.0 + 0.0 == 0.0
        // return value == 0.0 ? other : other.add(this);
        return other.add(this);
    }

    public DoubleValue subtract(DoubleValue other) {
        // Careful: -0.0 + 0.0 == 0.0
        // return value == 0.0 ? other.negate() : other.subtractFrom(this);
        return other.subtractFrom(this);
    }

    public DoubleValue subtractFrom(DoubleValue other) {
        // Careful: -0.0 + 0.0 == 0.0
        // return value == 0.0 ? other : other.subtract(this);
        return other.subtract(this);
    }

    public DoubleValue multiply(DoubleValue other) {
        return other.multiply(this);
    }

    public DoubleValue divide(DoubleValue other) {
        return other.divideOf(this);
    }

    public DoubleValue divideOf(DoubleValue other) {
        return other.divide(this);
    }

    public DoubleValue remainder(DoubleValue other) {
        return other.remainderOf(this);
    }

    public DoubleValue remainderOf(DoubleValue other) {
        return other.remainder(this);
    }

    public IntegerValue compare(DoubleValue other) {
        return other.compareReverse(this);
    }

    // Implementations of binary DoubleValue methods with ParticularDoubleValue
    // arguments.

    public DoubleValue generalize(ParticularDoubleValue other) {
        // Also handle NaN and Infinity.
        return Double.doubleToRawLongBits(this.value) == Double.doubleToRawLongBits(other.value) ? this
            : BasicValueFactory.DOUBLE_VALUE;
    }

    public DoubleValue add(ParticularDoubleValue other) {
        return new ParticularDoubleValue(this.value + other.value);
    }

    public DoubleValue subtract(ParticularDoubleValue other) {
        return new ParticularDoubleValue(this.value - other.value);
    }

    public DoubleValue subtractFrom(ParticularDoubleValue other) {
        return new ParticularDoubleValue(other.value - this.value);
    }

    public DoubleValue multiply(ParticularDoubleValue other) {
        return new ParticularDoubleValue(this.value * other.value);
    }

    public DoubleValue divide(ParticularDoubleValue other) {
        return new ParticularDoubleValue(this.value / other.value);
    }

    public DoubleValue divideOf(ParticularDoubleValue other) {
        return new ParticularDoubleValue(other.value / this.value);
    }

    public DoubleValue remainder(ParticularDoubleValue other) {
        return new ParticularDoubleValue(this.value % other.value);
    }

    public DoubleValue remainderOf(ParticularDoubleValue other) {
        return new ParticularDoubleValue(other.value % this.value);
    }

    public IntegerValue compare(ParticularDoubleValue other) {
        return this.value < other.value ? ParticularValueFactory.INTEGER_VALUE_M1 : this.value == other.value
            ? ParticularValueFactory.INTEGER_VALUE_0 : ParticularValueFactory.INTEGER_VALUE_1;
    }

    // Implementations for Value.

    public boolean isParticular() {
        return true;
    }

    // Implementations for Object.

    public boolean equals(Object object) {
        // Also handle NaN and Infinity.
        return super.equals(object)
            && Double.doubleToLongBits(this.value) == Double.doubleToLongBits(((ParticularDoubleValue)object).value);
    }

    public int hashCode() {
        return super.hashCode() ^ (int)Double.doubleToLongBits(value);
    }

    public String toString() {
        return value + "d";
    }
}